Mx.
[miks, muhks]
- a title of respect prefixed to a person's surname: unlike Mr., Mrs., or Ms., it does not indicate gender and may be used by a person with any or no specific gender identity.
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Origin of Mx.
1975–80; M (as in Mr./Mrs./Ms.) + x (symbol for an unknown quantity, person, or thing)
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018